60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
|
/*===---- popcntintrin.h - POPCNT intrinsics -------------------------------===
|
||
|
|
*
|
||
|
|
* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||
|
|
* See https://llvm.org/LICENSE.txt for license information.
|
||
|
|
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||
|
|
*
|
||
|
|
*===-----------------------------------------------------------------------===
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __POPCNTINTRIN_H
|
||
|
|
#define __POPCNTINTRIN_H
|
||
|
|
|
||
|
|
/* Define the default attributes for the functions in this file. */
|
||
|
|
#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("popcnt")))
|
||
|
|
|
||
|
|
#if defined(__cplusplus) && (__cplusplus >= 201103L)
|
||
|
|
#define __DEFAULT_FN_ATTRS_CONSTEXPR __DEFAULT_FN_ATTRS constexpr
|
||
|
|
#else
|
||
|
|
#define __DEFAULT_FN_ATTRS_CONSTEXPR __DEFAULT_FN_ATTRS
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/// Counts the number of bits in the source operand having a value of 1.
|
||
|
|
///
|
||
|
|
/// \headerfile <x86intrin.h>
|
||
|
|
///
|
||
|
|
/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
|
||
|
|
///
|
||
|
|
/// \param __A
|
||
|
|
/// An unsigned 32-bit integer operand.
|
||
|
|
/// \returns A 32-bit integer containing the number of bits with value 1 in the
|
||
|
|
/// source operand.
|
||
|
|
static __inline__ int __DEFAULT_FN_ATTRS_CONSTEXPR
|
||
|
|
_mm_popcnt_u32(unsigned int __A)
|
||
|
|
{
|
||
|
|
return __builtin_popcount(__A);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef __x86_64__
|
||
|
|
/// Counts the number of bits in the source operand having a value of 1.
|
||
|
|
///
|
||
|
|
/// \headerfile <x86intrin.h>
|
||
|
|
///
|
||
|
|
/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
|
||
|
|
///
|
||
|
|
/// \param __A
|
||
|
|
/// An unsigned 64-bit integer operand.
|
||
|
|
/// \returns A 64-bit integer containing the number of bits with value 1 in the
|
||
|
|
/// source operand.
|
||
|
|
static __inline__ long long __DEFAULT_FN_ATTRS_CONSTEXPR
|
||
|
|
_mm_popcnt_u64(unsigned long long __A)
|
||
|
|
{
|
||
|
|
return __builtin_popcountll(__A);
|
||
|
|
}
|
||
|
|
#endif /* __x86_64__ */
|
||
|
|
|
||
|
|
#undef __DEFAULT_FN_ATTRS
|
||
|
|
#undef __DEFAULT_FN_ATTRS_CONSTEXPR
|
||
|
|
|
||
|
|
#endif /* __POPCNTINTRIN_H */
|